1 | /* |
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2 | * Copyright (c) 2005 Jakub Jermar |
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3 | * All rights reserved. |
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4 | * |
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5 | * Redistribution and use in source and binary forms, with or without |
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6 | * modification, are permitted provided that the following conditions |
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7 | * are met: |
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8 | * |
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9 | * - Redistributions of source code must retain the above copyright |
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10 | * notice, this list of conditions and the following disclaimer. |
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11 | * - Redistributions in binary form must reproduce the above copyright |
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12 | * notice, this list of conditions and the following disclaimer in the |
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13 | * documentation and/or other materials provided with the distribution. |
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14 | * - The name of the author may not be used to endorse or promote products |
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15 | * derived from this software without specific prior written permission. |
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16 | * |
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17 | * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR |
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18 | * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES |
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19 | * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. |
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20 | * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, |
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21 | * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT |
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22 | * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
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23 | * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
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24 | * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
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25 | * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF |
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26 | * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
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27 | */ |
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28 | |
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29 | /** @addtogroup sparc64mm |
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30 | * @{ |
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31 | */ |
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32 | /** @file |
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33 | */ |
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34 | |
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35 | #ifndef KERN_sparc64_PAGE_H_ |
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36 | #define KERN_sparc64_PAGE_H_ |
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37 | |
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38 | #include <arch/mm/frame.h> |
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39 | |
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40 | /* |
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41 | * On the TLB and TSB level, we still use 8K pages, which are supported by the |
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42 | * MMU. |
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43 | */ |
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44 | #define MMU_PAGE_WIDTH MMU_FRAME_WIDTH |
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45 | #define MMU_PAGE_SIZE MMU_FRAME_SIZE |
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46 | |
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47 | /* |
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48 | * On the page table level, we use 16K pages. 16K pages are not supported by |
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49 | * the MMU but we emulate them with pairs of 8K pages. |
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50 | */ |
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51 | #define PAGE_WIDTH FRAME_WIDTH |
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52 | #define PAGE_SIZE FRAME_SIZE |
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53 | |
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54 | #define MMU_PAGES_PER_PAGE (1 << (PAGE_WIDTH - MMU_PAGE_WIDTH)) |
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55 | |
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56 | #ifdef KERNEL |
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57 | |
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58 | #ifndef __ASM__ |
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59 | |
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60 | #include <arch/interrupt.h> |
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61 | |
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62 | extern uintptr_t physmem_base; |
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63 | |
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64 | #define KA2PA(x) (((uintptr_t) (x)) + physmem_base) |
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65 | #define PA2KA(x) (((uintptr_t) (x)) - physmem_base) |
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66 | |
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67 | typedef union { |
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68 | uintptr_t address; |
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69 | struct { |
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70 | uint64_t vpn : 51; /**< Virtual Page Number. */ |
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71 | unsigned offset : 13; /**< Offset. */ |
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72 | } __attribute__ ((packed)); |
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73 | } page_address_t; |
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74 | |
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75 | extern void page_arch_init(void); |
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76 | |
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77 | #endif /* !def __ASM__ */ |
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78 | |
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79 | #endif /* KERNEL */ |
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80 | |
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81 | #endif |
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82 | |
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83 | /** @} |
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84 | */ |
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